ABSTRACT
This chapter helps to explain how significant the factors "micro-teaching," "professional development," and "school size" are. It also helps to explain what is meant by collective intelligence and how individuals can benefit from it. The chapter explains what conditions need to be fulfilled for successful team teaching. In schools, collective efficacy is very influenced by school organizational features such as responsiveness of administrators to encouraging teacher collaboration. Micro-teaching refers to methods for planning small-scale lessons in a group and analyzing and discussing them with the help of videos. "Professional development" achieves a large effect size in Visible Learning – although it is also one of the more variable influences. Social scientists use the term "collective intelligence" to gain insight into these relationships. The term goes all the way back to antiquity. The teaching described in the anecdote is not team teaching, because the teachers do not teach with one another but after one another.
